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Abstract:
为了有效地评估和预测功率变换器中磁元件的磁芯损耗,将反映磁芯一个励磁周期内损耗的动态磁滞回线以椭圆回线等效,推导出了无直流偏磁工况下脉宽调制(pulse width modulation,PWM)波形励磁的磁芯损耗模型。采用差值损耗测量思想,以DC/AC逆变电路作为测试电路,测量了直流偏磁及PWM波励磁下的磁芯损耗。进一步根据直流偏磁下磁芯损耗的测量结果及其特征的分析,构思了以磁芯基本磁化曲线模型为基础的直流偏磁和PWM波励磁下的磁芯损耗模型。最后,对比了测试数据和所提出的模型的计算结果,验证了模型的正确性。
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中国电机工程学报
ISSN: 0258-8013
Year: 2015
Issue: 10
Volume: 35
Page: 2601-2606
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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